Monthly Archives: January 2017

Puzzle #168: Who Gets the Easter Eggs?

Posted on January 29, 2017 by Alok Goyal

This is a delightful and a very counterintuitive puzzle, again from the NSA collection. Original puzzle has been written by Tim C., an Applied Research Mathematician at NSA. Alice has a dozen cartons, arranged in a 3×4 grid, which for … Continue reading →

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Solution to Puzzle #166: Donut Sharing

Posted on January 29, 2017 by Alok Goyal

This was a very simple puzzle, perhaps a bit too simple and I therefore received only two correct responses – Pratik Poddar and Mahi Saraf – well done both! I am taking the liberty of reproducing the answer from Mahi: … Continue reading →

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Puzzle #167: 4 Rats in a Star

Posted on January 22, 2017 by Alok Goyal

Yet another wonderful puzzle from the NSA collection. Please do have your children try this one! RATS x 4 = STAR Each instance of a letter stands for the same digit, no two letters represent the same digit, and R … Continue reading →

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Solution to Puzzle #165: Truth & Lies – 7 of them!

Posted on January 22, 2017 by Alok Goyal

This was a very interesting puzzle, and I got many correct solutions, and I was delighted to see many children come back with solutions this time. I got correct solutions from Mahi Saraf and a joint team of Abhiram, Anisha … Continue reading →

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Solution to Puzzle #162: Who Finished 2nd in 100m?

Posted on January 22, 2017 by Alok Goyal

Suman Saraf rightly reminded me that I had not posted the solution for this puzzle. My apologies. Many people did this correctly. Mahi Saraf, Anisha Sharma Goyal, Pratik Poddar, Abhinav Jain and Vishal Poddar all sent correct answers – well … Continue reading →

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Puzzle #166: Donut Sharing

Posted on January 15, 2017 by Alok Goyal

This puzzle is a variation of a puzzle I had posted very early (amongst my first 10 posts). It is very simple, and intended for children. Thanks to Suman Saraf for contributing this one. Alice and Bob go into their … Continue reading →

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Solution to Puzzle #163: The “Hatke” Puzzle

Posted on January 15, 2017 by Alok Goyal

This was a truly “hatke”or a “wierd” puzzle. Unfortunately as it turned out the answer is not very elegant and not very “correct” either. That said, it was a good exercise to exercise the brain, and I got the best … Continue reading →

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Solution to Puzzle #164: The Physics Puzzle

Posted on January 8, 2017 by Alok Goyal

I am posting the solution for Puzzle #164 before I do so for puzzle #163, which I will do next week. It was not too difficult a puzzle, and even if you did not try it with your children, please … Continue reading →

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Puzzle #165: Truth & Lies – 7 of them!

Posted on January 8, 2017 by Alok Goyal

Welcome back, and a very happy new year to all of you. Lets start with a new puzzle before I post solutions to previous problems. I will begin this week with a very nice puzzle from the NSA collection. Here … Continue reading →

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